Connect Posto to Claude as a custom connector

With a custom connector, Claude (claude.ai, Claude Desktop, and the Claude mobile apps) can create carousels, read schedules, and schedule posts in Posto on your behalf. You don't copy an API key: Claude opens the Posto consent page, you pick a workspace and permissions, and you're done.

What you need

• API & MCP access: the Agency plan, or the API & MCP add-on.
• You are an owner or admin of the workspace you want to connect.
• A verified email on your Posto account.

Steps in claude.ai

1. Open Customize → Connectors and click Add custom connector. On Team or Enterprise plans, an organization owner adds it under Organization settings → Connectors, then each member clicks Connect.
2. Enter a name (e.g. Posto) and the MCP server URL: https://posto.id/mcp. You also find this URL in Brand & social accounts → API & MCP (/app/settings/api), under Connected apps. Leave the OAuth client settings empty.
3. Click Add, then Connect. Claude opens the Posto consent page. Sign in first if asked.
4. Check the app name and address, pick the workspace, and untick permissions you don't need:
   • Read: view carousels, schedules, and AI credit balance.
   • Create content: create and edit carousels, images, exports. AI actions use AI credits.
   • Schedule: create and cancel scheduled posts.
5. Click Allow. You're sent back to Claude and the connector is ready.

Want Claude to only read? Tick Read only. If Claude later tries a tool that needs another permission, it asks you to approve the extra permission on the same page. You can decline.

Security

• Access is tied to one workspace and the permissions you chose. Limits are the same as for API keys: 60 requests per minute, 10 concurrent content generations, and an AI credit confirmation before AI credits are spent.
• Claude uses tokens that last 1 hour and renew automatically. Posto never gives your password or API key to Claude.
• If you are demoted to editor or leave the workspace, the access you approved stops too.

Revoke access

Open Brand & social accounts → API & MCP, go to Connected apps, and click Revoke access next to the app. Claude loses access immediately. To use it again, click Connect in Claude.

Claude Code and other apps

Other MCP apps that support OAuth (e.g. Claude Code: claude mcp add --transport http posto https://posto.id/mcp, then /mcp to sign in) use the same flow. If the consent page mentions a localhost address, the app runs on your own computer; only continue if you are running it yourself. Apps without OAuth support can still use an API key, see API and MCP.

Rotate API keys regularly

In the API key list, click Rotate. Posto creates a new key with the same name and permissions. The old key keeps working for 24 hours so you can swap it in your program, then stops automatically. Click Revoke now if the old key must stop right away.

Still stuck? Contact [email protected].